Real-time balanced turbo field echo cine-magnetic resonance imaging evaluation of tongue movements during deglutition in subjects with anterior open bite

Akin E., Sayin M., Karacay S., Bulakbasi N.

AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS, vol.129, no.1, pp.24-28, 2006 (SCI-Expanded) identifier identifier identifier


Introduction: The aim of this study was to evaluate tongue movements in subjects with anterior dental open bites during deglutition by using real-time balanced turbo field echo cine-magnetic resonance imaging. Methods: The study included 28 subjects. Two groups were formed according to the presence of anterior open bite (at least 2 mm). The open-bite group (OBG) consisted of 18 patients (14 girls, 4 boys) with a mean age of 14.5 +/- 2.7 years. The control group (CG) consisted of 10 patients (5 girls, 5 boys) with a mean age of 14.5 +/- 2.6 years. We evaluated deglutition during 3 stages: oral (stage 1), pharyngeal (stage 2), and esophageal stage (3). Results: Results indicated that (1) in the OBG, from stage 2 to stage 3, the anterior portion of the tongue dorsum lowered whereas its midportion elevated; (2) in the CG, its posterior portion was elevated from stage 2 to stage 3; (3) in the CG, the tongue tip was positioned more anteriorly at stage 2 than at stage 1; (4) in the OBG, the tongue tip moved more anteriorly in all stages of deglutition than in the CG. Conclusions: Compensatory tongue functions occur in patients with anterior dental open bites. Dynamic MRI is a promising tool for evaluating swallowing patterns in these patients.